KENTWOOD -- Police say a robber entered an 80-year-old woman's Kentwood home today, demanded she give him her bank account's PIN, then severely beat her and tied her up when she refused.

The woman, identified as Betty Oosterhouse, was being treated at Spectrum Health Butterworth hospital.

Police said the robber, a 45-year-old Grandville man, then stole three credit cards and fled the area in Oosterhouse's 1994 Park Avenue.

Police put out a bulletin for the vehicle and, not long after, Grand Rapids police began chasing the car. It crashed, rolling over, near Sweet Street NE and Center Street and police apprehended the suspect.

He is expected to be charged with armed robbery, home invasion, unlawful imprisonment, assault and auto thefts.

The suspect was injured in the crash, but the injuries were minor, police said.

Kentwood police Sgt. Doug Wegener said Oosterhouse was not immediately concerned when she saw the man in her house sometime after 10 a.m. because she believed it was one of three roofers who worked on her home in recent weeks. She thought he was there to finish the job.

He asked to use a phone, saying his car would not start, and when turned around after giving it to him, he put a knife to her throat.

"He beat her up pretty bad," Wegener said.

Police found a significant amount of blood in the house, although they do not know whether she was cut.

Oosterhouse managed to break free from the lamp cord the man used to tie her to a pole in the basement and a neighbor came to her aid in her front yard.